<template>
  <div class="cart" v-loading="loading">
    <template v-if="cartList.length || invalidGoods.length">
      <nav>
        <li>
          <el-checkbox v-model="checkAll" @change="allElection"></el-checkbox>
        </li>
        <li>商品信息</li>
        <li>价格</li>
        <li>数量</li>
        <li>小计</li>
        <li>操作</li>
      </nav>
      <div class="list" v-for="(siteItem, siteIndex) in cartList" :key="siteIndex">
        <div class="item">
          <!-- <div class="head">
						<el-checkbox v-model="siteItem.checked" @change="siteAllElection(siteIndex)"></el-checkbox>
						<router-link to="/shop" target="_blank">{{ siteItem.siteName }}</router-link>
						<el-tag size="small" v-if="siteItem.cartList[0].is_own == 1">自营</el-tag>
					</div> -->
          <ul v-for="(item, cartIndex) in siteItem.cartList" :key="cartIndex">
            <li>
              <el-checkbox v-model="item.checked" @change="singleElection(siteIndex, cartIndex)"></el-checkbox>
            </li>
            <li class="goods-info-wrap" @click="$util.pushToTab({ path: '/sku/' + item.sku_id })">
              <div class="img-wrap"><img class="img-thumbnail" :src="$img(item.sku_image, { size: 'mid' })"
                  @error="imageError(siteIndex, cartIndex)" /></div>
              <div class="info-wrap">
                <h5>{{ item.sku_name }}</h5>
                <template v-if="item.sku_spec_format">
                  <span v-for="(x, i) in item.sku_spec_format" :key="i">
                    {{ x.spec_name }}：{{ x.spec_value_name }} {{ i < item.sku_spec_format.length - 1 ? '；' : '' }}
                  </span>
                </template>
              </div>
            </li>
            <li>
              <span>￥{{ item.discount_price }}</span>
            </li>
            <li>
              <el-input-number v-model="item.num" :step="modifyNum" size="mini" :min="item.min_buy>0 ? item.min_buy :1"
                :max="item.max_buy > 0 && item.max_buy < item.stock ? item.max_buy : item.stock"
                @change="cartNumChange($event, { siteIndex, cartIndex })"></el-input-number>
            </li>
            <li>
              <strong class="subtotal ns-text-color"
                v-if="item.discount_price * item.num">￥{{ $util.filterPrice(item.discount_price * item.num) }}</strong>
              <strong class="subtotal ns-text-color" v-else>￥0</strong>
            </li>
            <li>
              <el-button type="text" @click="deleteCart(siteIndex, cartIndex)">删除</el-button>
            </li>
          </ul>
        </div>
      </div>

      <div class="lose-list" v-if="invalidGoods.length">
        <div class="head">
          失效商品
          <span class="ns-text-color">{{ invalidGoods.length }}</span>
          件
        </div>
        <ul v-for="(goodsItem, goodsIndex) in invalidGoods" :key="goodsIndex">
          <li>
            <el-tag size="small" type="info">失效</el-tag>
          </li>
          <li class="goods-info-wrap">
            <div class="img-wrap"><img class="img-thumbnail" :src="$img(goodsItem.sku_image, { size: 'mid' })"
                @error="imageErrorInvalid(goodsIndex)" /></div>
            <div class="info-wrap">
              <h5>{{ goodsItem.sku_name }}</h5>
              <template v-if="goodsItem.sku_spec_format">
                <span v-for="(x, i) in goodsItem.sku_spec_format" :key="i">
                  {{ x.spec_name }}：{{ x.spec_value_name }}{{ i < goodsItem.sku_spec_format.length - 1 ? '；' : '' }}
                </span>
              </template>
            </div>
          </li>
          <li>
            <span>￥{{ goodsItem.discount_price }}</span>
          </li>
          <li>{{ goodsItem.num }}</li>
          <li>
            <strong class="subtotal">￥{{ $util.filterPrice(goodsItem.discount_price * goodsItem.num) }}</strong>
          </li>
        </ul>
      </div>

      <footer>
        <el-checkbox v-model="checkAll" @change="allElection">全选</el-checkbox>
        <ul class="operation">
          <li>
            <el-button type="text" @click="deleteCartSelected">删除</el-button>
          </li>
          <li>
            <el-button type="text" @click="clearInvalidGoods" v-if="invalidGoods.length!=0">清除失效宝贝</el-button>
          </li>
        </ul>
        <div class="sum-wrap">
          <div class="selected-sum">
            <span>已选商品</span>
            <em class="total-count">{{ totalCount }}</em>
            <span>件</span>
          </div>
          <div class="price-wrap">
            <span>合计（不含运费）：</span>
            <strong class="ns-text-color">￥{{ totalPrice }}</strong>
          </div>

          <el-button type="primary" v-if="totalCount != 0" @click="settlement">结算</el-button>
          <el-button type="info" v-else disabled @click="settlement">结算</el-button>
        </div>
      </footer>
    </template>
    <div class="empty-wrap" v-else-if="!loading && (!cartList.length || !invalidGoods.length)">
      <img src="~assets/images/goods_empty.png">
      <router-link to="/">您的购物车是空的，赶快去逛逛，挑选商品吧！</router-link>
    </div>
  </div>
</template>

<script>
  import cart from '@/assets/js/goods/cart';
  export default {
    name: 'cart',
    mixins: [cart]
  };
</script>
<style lang="scss" scoped>
  @import '@/assets/css/goods/cart.scss';
</style>